diff options
| author | Werner Zeh <werner.zeh@siemens.com> | 2021-11-03 07:26:44 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-11-04 11:04:27 +0000 |
| commit | 2d046936401d49dff8b4ab6cf509eeac92db865d (patch) | |
| tree | aa6c6f132bd5ae7877dea8c7893d2eea74cffa6b /src | |
| parent | 2c439adb51ca8323b55d759e2a45b71a6187a9da (diff) | |
mb/siemens/mc_ehl: Disable C-States for CPU and package
Disable all C-states other than C0/C1 for CPU and package.
Change-Id: I2c163f859dab4b0dc02896c70122e993cdd3db72
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58893
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <lean.sheng.tan@intel.com>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/siemens/mc_ehl/mainboard.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mainboard/siemens/mc_ehl/mainboard.c b/src/mainboard/siemens/mc_ehl/mainboard.c index e64dbda54f..eff2d21ac6 100644 --- a/src/mainboard/siemens/mc_ehl/mainboard.c +++ b/src/mainboard/siemens/mc_ehl/mainboard.c @@ -10,6 +10,7 @@ #include <hwilib.h> #include <i210.h> #include <soc/gpio.h> +#include <soc/ramstage.h> #include <string.h> #include <timer.h> #include <timestamp.h> @@ -114,6 +115,15 @@ static void wait_for_legacy_dev(void *unused) printk(BIOS_NOTICE, "done!\n"); } +void mainboard_silicon_init_params(FSP_S_CONFIG *params) +{ + /* Disable CPU power states (C-states) */ + params->Cx = 0; + + /* Set maximum package C-state to PkgC0C1 */ + params->PkgCStateLimit = 0; +} + static void mainboard_init(void *chip_info) { const struct pad_config *pads; |